Graphics drivers suddenly stopped working

[Fortress]

I have been experiencing an annoying problem with my graphics card. Basically, the graphics drivers crash constantly with an interval of about 4-6 minutes which totally drives me crazy because I have to wait a few seconds before it returns back to normal. 

 

What happens?

1. The mouse locks up and screen freezes.

2. Screen turns black and stays like that for about 20-50 seconds (50 max.)

3. Screen returns back to normal and then a notification appears, saying "Driver has crashed and successfully recovered".

 

When does it happen:

1. Normal use, typing, web browsing. Much worse when playing games. Intervals shorten and freezes happen every 2-3 minutes.

 

The PC is currently running Windows 8. I transferred my hard drive from my main PC into this PC since my main PC had bloated its motherboard capacitors, caused by mild overclocking.

 

SPECS:

CPU - Intel Pentium Dual-Core E5200 - 2.5GHz

GPU - Palit GeForce GT 730 - 2GB DDR5

RAM - 4GB Kingston ValueRAM DDR2

Motherboard - ASRock G31M-S

 

Any tips or advices will be greatly appreciated. I am unsure what to do next.

[soaringchicken]

reinstall would be my first bet, tell me what happens after you try that. 

[Lolzious]

The PC is currently running Windows 8. I transferred my hard drive from my main PC into this PC since my main PC had bloated its motherboard capacitors, caused by mild overclocking.

There's your problem.

Wipe the HDD, install Windows 7 or at least 10.

[EliasNM]

You need to reinstall it seems. Has to be an issue with not recognizing the motherboard its on or something along those lines.

[GoldSrc]

Go back to a previous driver.