FAT (File Allocation Table)

FAT (File Allocation Table) file system provides a mapping between the logical storage and physical location of the hard drive data. It contains an entry for all files stored on the hard drive that restrains the address of the file’s initial cluster. Corruption of FAT file system primarily occurs due to operating system corruption, improper system shutdown, malicious software like virus and more. After the FAT file system corruption, the data stored in the hard drive becomes inaccessible. In such situations, if no backup is available, you need to recover the lost data by using efficient Data Recovery Software.

For example, if you have two different drives in your system – FDD (Floppy Disk Drive) and MO (Magneto-Optical) drive – that have non-unique volume serial numbers and similar files, you might encounter the below STOP error message:

“STOP 0×00000023 (Parameter1, Parameter2, Parameter3, Parameter4)

FAT_FILE_SYSTEM”

The four parameters in the error message differ with computer’s configuration.

Cause:

This above error message mainly occurs because the FAT file system driver is unable to recognize the two drives and hence the media in your system. As there are various differences between the types of these media, you encounter the above error message. Another major cause for the error message can be physical disk problem or IRP (Input/output Request Packets) corruption.

Resolution:

To resolve the above STOP error and access the data, you should take these actions:

* Make sure that there are no file system integrity issues by running chkdsk(Checkdisk utility) command with different switches as /r and /f.
* Stop all file system filter drivers like backup utilities, virus scanners or firewall software.
* Update all disk, tape backup, CD-ROM or removable device drivers to their latest versions.
* Verify the file properties of the Fastfat.sys file to ensure that it matches the present version of the operating system.
* Apply the Hotfix solution provided by Microsoft.

However, if all the above steps fail to resolve your problem, then the best possible solution is to reinstall the operating system. A clean reinstall of the operating system will delete all data from the selected hard drive partition. In such situations, to completely recover the data, you should use effective Data Recovery Software.

Such Data Recovery Tools perform complete recovery and restoration of lost data from a formatted hard drive. These user-friendly Data Recovery applications can be easily implemented due to their largely graphical interface and to-the-point documentation.

Windows Data Recoveryis the finest Data Recovery solution with most advanced features like RAW File Recovery, Drive Imaging and more.It natively supports more than 300 diverse file types. It is compatible with FAT16, FAT32, vFAT, NTFS and NTFS5 file systems. It supports Windows Vista, XP, 2003 and 2000.

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Acer Laptop

When Acer laptop computers first appeared onto the UK laptop scene, people tended to turn up their nose at the name (it was not a known brand) and because Acer laptop computers were significantly cheaper than many of their rivals, the assumption was made, quite wrongly, that cheaper laptops meant shoddy laptops.

Over the years people who have tried Acer laptop products have discovered that a cheap Acer laptop computer means a laptop that costs less but does not provide a sub standard set of components.

The Acer company goal is to provide people with an easy to use laptop, which is dependable and satisfies customer requirements and was, obviously, affordable. This ethos has turned Acer laptops from being “Oh dear, you own an Acer” to becoming one of the top five PC vendors in the world and in 2008 became world’s No.1 for their notebook computers. Laptop snobs should beware of turning their noses up at Acer laptops nowadays, they may, very well, be missing something.

The Acer Aspire laptop 5735 has Acer Cine Crystal which means you get to near cinema quality viewing on the High Definition TFT LCD 15.6″ screen and with its stereo speakers you can look forward to unbelievable sound quality, too. The 2.0 GHz Intel Core Duo processors makes downloading quicker and completing tasks becomes a piece of cake. With 4GB of RAM and 250 GB Hard drive storage, you are not going to run out of space any time soon. The Aspire laptop is wireless enabled, so, you are ready to surf the web and its 5-in-1 card reader makes file sharing easy peasy, too. The Acer Aspire 5735, a What Laptop Gold Award winning laptop computer for 2009, comes with Microsoft Vista Home Premium operating system and is an excellent multimedia laptop for home use.

Pyramid.com like to think they know a bit about laptop computers and can readily tell the difference between an inexpensive laptop computer and a cheap laptop computer. Pyramid.com stock and supply Acer laptop computers for home, school or business use, which would allow you to benefit from all the latest laptop technology at a fraction of the price.

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Hardisk

It is from our Central London IT repair centre that we have been serving London and UK customers for the past 15 years. We have made a name for ourselves for offering expert laptop and computer repair solutions to businesses and home users. Our highly trained laptop and computer engineers and technicians will promptly and resourcefully find the perfect solutions to all your PC computer, laptop, Apple Mac and data recovery requirements.

They provide comprehensive support and repair solutions for home users and also for both public and private sector organizations in London and throughout the UK.

We provide our expert laptop repair service for many branded laptops such as IBM laptop repair, Sony laptop repair, Compaq laptop repair, Dell laptop repair, Toshiba laptop repair, Apple laptop repair, Asus laptop repair, Panasonic laptop repair, Packard Bell laptop repair, Siemens laptop repair, HP laptop repair, Gateway laptop repair, Fujitsu laptop repair, Lenovo laptop repair, NEC laptop repair, Alienware laptop repair and many others. Whether it is for general repairs or upgrades, our laptop and notebook repair company offers competitive rates for any brand of laptop. We are experts in notebook repair, laptop repairs, lcd repair, laptop screen repair, laptop motherboard repair, broken laptop repair, laptop screens repair, LCD replacement, hard drive repair, DC power jack repair etc.

We can resolve problems like random shut downs, booting problems, and display problems. If you have lost your important data, we can also recover your data through our efficient data recovery services.

We have successfully recovered data from thousands of hard drives and other storage devices. Our data recovery services are suitable for small and medium sized businesses and individuals all over the UK. Our commitment to provide the highest level of hard drive data recovery has made as one of the best choices among prospective London and UK clients. Unlike our competitors, we provide our clients with professional quality and excellent data backup and recovery at competitive rates.

We offer data recovery from any type of storage media including:

» Hard drive recovery (data recovery expertise on almost all file systems including FAT12, FAT16, FAT32,NFS, NTFS, HPFS, UFS, Ext2, Ext3).
» RAID data recovery
» Flash memory data recovery
» Optical media data recovery
» Pen drive data recovery
» Zip drive data recovery
» Laptop data recovery

Our UK hard disk data recovery experts provide prompt data recovery from operating systems such as MS-DOS, Win95 / 98 / ME / NT / 2000 / XP, MAC OS X or higher, Apple Mac O.S. 3.0, Unix (Solaris, AIX, BSD, HP), Sun Solaris 8 and Linux (RedHat, Mandrake, Corel, Debian).

For any further queries or information, please call us on 0207 237 6805 or email: info@creativeit.tv.

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Intel Core i7

Intel Core i7 is a family of three Intel desktop x86-64 processors, the first processors released using the Intel Nehalem microarchitecture and the successor to the Intel Core 2 family. All three current models and two upcoming models are quad-core processors. The Core i7 identifier applies to the initial family of processorscodenamed Bloomfield. Intel representatives state that the moniker Core i7 does not have any deeper meaning. The name continues the use of the successful Core brand. Core i7, first assembled in Costa Rica,  was officially launched on November 17, 2008  and is manufactured in Arizona, New Mexico and Oregon, though the Oregon plant is moving to the next generation 32 nm process.

Features

The Nehalem microarchitecture has many new features, some of which are present in the Core i7. The ones that represent significant changes from the Core 2 include:

• The new LGA 1366 socket is incompatible with earlier processors.
• On-die memory controller: the memory is directly connected to the processor.
  • Three channel memory: each channel can support one or two DDR3 DIMMs. Motherboards for Core i7 have four (3+1) or six DIMM slots instead of two or four, and DIMMs can be installed in sets of three or two.
  • Support for DDR3 only.
  • No ECC support.
• The front side bus is replaced by QuickPath interface. Motherboards must use a chipset that supports QuickPath.
• The following caches:
  • 32 KB L1 instruction and 32 KB L1 data cache per core
  • 256 KB L2 cache (combined instruction and data) per core
  • 8 MB L3 (combined instruction and data) “inclusive”, shared by all cores
• Single-die device: all four cores, the memory controller, and all cache are on a single die.
• “Turbo Boost” technology allows all active cores to intelligently clock themselves up in steps of 133 MHz over the design clock rate as long as the CPU’s predetermined thermal and electrical requirements are still met.
• Re-implemented Hyper-threading. Each of the four cores can process up to two threads simultaneously, so the processor appears to the OS as eight CPUs. This feature was present in the older NetBurst microarchitecture but was dropped in Core.
• Only one QuickPath interface: not intended for multi-processor motherboards.
• 45nm process technology.
• 781M transistors for the quad core version.
• 263mm² Die size.
• Sophisticated power management can place an unused core in a zero-power mode.
• Support for SSE4.2 & SSE4.1 instruction sets.

Processor cores

• The clock rates listed here are as specified by Intel for normal mode. “Turbo boost” can increase the rate on active cores in steps of the base clock (133MHz if not overclocked) up to a predetermined limit for short periods when required, which can be useful with single threaded applications.
• The 965 XE has separate unlocked multipliers for memory and cores.
  • Core clock above those in the table are not guaranteed by Intel.^[4] Rates above 5GHz have been reported.
  • Memory rates above those in the table are not guaranteed by Intel.^[4] Rates above DDR3-2000 have been reported.
• The processor has a Thermal Design Power of 130W and will slow itself down if this power is exceeded. This feature can be disabled from an option in most of the new motherboards’ BIOS.^[12]

Performance

• The Inquirer managed to get a 965 engineering sample to a core clock speed of up 4GHz with fan cooling and Turbo Booster alone.
• IT OC Taiwan overclocked an engineering sample of the 965, to 4.20 GHz with a QPI speed of 200 MHz and a multiplier value of 21.0x. A vCore setting of 1.72V was used, which is far higher than the stock of 1.25V.
• A Core i7 940 system running at stock speeds has obtained a 3DMark Vantage benchmark CPU score of 17,966.A Core i7 920 system scored 16,294 running at stock speeds. An Intel Core 2 Extreme QX9770, a very expensive member of the previous generation of Intel processors (costing over four times the price of the 920 at its launch), scored 13,182 also running at stock speeds.

• AnandTech tested the Intel QuickPath Interconnect (4.8 GT/s version) and found the copy bandwidth using triple-channel 1066 MHz DDR3 was 12.0 GB/s. A 3.0 GHz Core 2 Quad system using dual-channel 1066 MHz DDR3 achieved 6.9 GB/s.

• Maximum PC has discovered that Intel has unlocked the clock and memory multipliers on retail 920’s and 940’s. This is allegedly due to consumer feedback.

• Core i7-975 will have the new D0 Stepping.

Overclocking

The process of overclocking the Core i7 architecture is similar to that of the AMD architecture due to the on-die MCH. Over-clocking will be possible with the 900 series and a motherboard equipped with the X58 chipset. In early October 2008, reports surfaced that it will not be possible to use “performance” DDR3 DIMMs that require voltages higher than 1.65v, because the integrated memory controller within the Core i7 will be damaged.

The Core i7 has three memory channels, and the channel bandwidth can be selected by setting the memory multiplier. However, in early benchmarks, when the clock rate is set higher than a threshold (1333 for the 965XE) the processor will only access two memory channels simultaneously. A 965XE has higher memory throughput with 3xDDR3-1333 than with 3xDDR3-1600, and 2xDDR3-1600 has almost identical throughput to 3xDDR3-1600.

Drawbacks

The Core i7 does not support error-correcting memory. Some high-end motherboards that support the Core i7 advertise support for ECC memory, for example Supermicro’s C7X58 and X8SAX (see Supermicro’s X8SAX page), however, in the same motherboard manuals, it is made clear that ECC is only supported if the CPU has the feature enabled.

Some early articles suggested that i7’s design is not ideal for gaming performance. In a test performed on leaked hardware, a Core i7 940 compared to a QX9770 showed the Core i7 to be slower than Yorkfield clock-for-clock in two trials, while being faster in two others. The difference in all cases was small, and was due to the significantly smaller sized L2 cache on the processor cores, with each core able to access its own 256 kB of L2 cache. In contrast, the most recent Yorkfields have up to 12 MB of L2 cache. To help compensate, the Core i7 also has a new L3 cache of 8 MB, shared among all four cores, similar to AMD’s “Barcelona” processors. This is due to the trend of games making use of more threads, and with hyper-threading (HT) the Core i7 can scale more than 4x faster, such as in cinebench tests. However, more recent testing done on all clock rates of official hardware with final drivers and BIOS revisions show that Core i7 at the very least beats Yorkfield clock-for-clock, and in most cases exceeds it by an average of about 17%.But when it comes to high-end multi-GPU environments (Nvidia 3-way SLI and ATI Crossfire X), the i7 is revealed to be much faster than Yorkfield (QX9770) in clock-for-clock.