From time to time BSOD screens, please help

Hi,
I have problem with my new computer, random BSODs from time to time,
please help
Thanks!

Code:

BugCheck 19, {3, fffff8a008a07880, fffff8a00c394bc0, fffff8a008a07880}

Probably caused by : Pool_Corruption ( nt!ExDeferredFreePool+cbb )

Code:

Usual causes:  Device driver

This can also be caused by RAM or hard-drive corruption.

The header for the pool allocation has become corrupted, each header also has a pool tag which describes the purpose of the allocation. There seems to be problems with how Windows is allocating memory to drivers.

More specifically, the pool freelist has become corrupted, indicated by parameter 3 in blue, the freelist is a data structure used by Windows for memory allocation, it works by freeing region by linking it to the free list, and then allocation memory by removing it from the free list and then using it.

What To Do -

Run Driver Verifier to scan for any corrupted drivers which may be causing problems, this program works by running various stress tests on drivers, in order to produce a BSOD which will locate the driver; run for least 24 hours:

• Driver Verifier - Enable and Disable

   Information

Additional Help - Using Driver Verifier to identify issues with Drivers

Install and perform full scans with:

• Malwarebytes : Free anti-malware download
• Microsoft Security Essentials | Protect against viruses, spyware, and other malware

   Information

Remember to install the free version of Malwarebytes not the free trail; untick the free trial box during installation. MSE is the most lightweight and compatible with the Windows 7 operating system

   Note

Please update all programs with the latest updates and definitions prior to scanning.

You can also view this thread for a complete free and lightweight security protection combination:

• Good and Free system security combination.

Reduce the number of programs at startup, to avoid any driver or program conflicts:

• Troubleshoot Application Conflicts by Performing a Clean Startup
• Startup Programs - Change

Thanks,
I think I found the problem,
it is poor-quality power supply due to my old APC back-UPS

Welcome, glad to know you managed to resolve your problem.