Pc restarted some time pc restarted without any notice . sometimes show: windows delayed writing failed. windows cannot save this file due to hardware failure

Irrespective of being a PC or a Mac the computer system behavior and consistency are dependent upon certain factors. These factors are broadly divided into software factors, hardware factors and the surroundings.
The common software factors leading to a logical failure are:
i.) System files responsible for handling control to the operating system missing or corrupt
ii.) Unsigned drivers or drivers trying to access read only system area
iii.) Operating system files corruption due to incomplete automatic update, malicious software
The common hardware factors leading to a physical failure are:
i.) Problems related to mainboard in terms of the chipset or connector, power supply issue like incompetent power supply to run the hardware setup
ii.) Problems related to hard drive itself or the data or power cables
iii.) Improper setup of hard drive cooler fans (if any)
The common surrounding factors leading to data loss are:
i.) Heat dissipation issues related to closed or poorly ventilated surroundings like in a basement or store
ii.) Moist surroundings leading to the formation of thick dust layers and thus increasing heat
iii.) Direct sunlight leading to extra heat and thus hardware failure
We should logically negate these scenarios so that we can narrow down to the root cause of the problem and take corrective measures.
In case we find that the data loss is due to any logical failure, we can use data recovery software as they are programmed to meet the challenges due to all kind of logical crashes. They scan through the file system, locate all the files which are marked as deleted and are distributed as fragments across the partition, logically rearrange them as per the file system information and then recover them. The data recovery software are indispensable in cases like file system corruption, hard drive formatting operating
system corruption, accidental file deletion or malicious software like virus, spyware etc. We can perform a ‘Do It Yourself’ data recovery using these utilities as they are self descriptive and User friendly.
We need to install the data recovery software on another hard drive which is bootable. We can also use a different working system preferably using the same operating system platform as for MS Windows. Then, we can attach our hard drive to the same for scanning. For attaching the hard drive we nowadays use USB 2.0 Hi Speed or IEEE 1394/Firewire Cables, Attachments or Enclosures. The same can be achieved by a Master and Slave setup that requires hard drive jumper operations and thus is a little complex. We should avoid any other jumper operations as of the mainboard as they may lead to unstable system behavior based on BIOS settings.
We should always save the recovered data on a healthy hard drive.
In case of data loss due to hardware failure where the hard drive is either not getting powered or can not be recognized by the BIOS, we need to go for hard drive recovery service. The data recovery service is personalized help, delivered by data recovery experts. Such experts can extract your data in all possible scenarios of physical data loss.