Hi Safyz and welcome to TSF.

Could you give us your full system specs so we can see what we are working with. If you are unsure what your specs are, download and run Speccy, then when it's generated the information (about 10 seconds) go File>Save Snapshot, and attach that .speccy file as well. (You will need to zip it to attach it here: Right click on it and select 'Send To'>'Compressed (zipped) Folder'.

Could you also tell us what PSU (Powers Supply Unit) you have and what wattage it is. To find this out, turn off the computer and open it up and look for a label on it. It should tell you the make and wattage there.

Also, next time you boot the machine can you:

Window Key+R and type msconfig and hit OK.
Under 'Services tab', tick 'Hide all Microsoft Services' and then uncheck the remaining programs and 'Apply'
Then under 'Startup tab' - Uncheck anything not Microsoft related then 'Apply' and OK

Could you also let me know if you have recently installed any new programs or hardware. What anti-virus are you running?

 

Thanks a lot for quick reply!!

Here is full system spesi

Operating System
MS Windows 7 Ultimate 64-bit SP1
CPU
Intel Core i3 540 @ 3.07GHz 34 °C
Clarkdale 32nm Technology
RAM
6.0GB Dual-Channel DDR3 @ 535MHz (7-7-7-20)
Motherboard
ASUSTeK Computer INC. P7P55 LX (LGA1156) 43 °C
Graphics
HP w19 (1440x900@60Hz)
1024MB GeForce GTS 250 (XFX Pine Group) 46 °C
Hard Drives
488GB Western Digital WDC WD5000YS-01MPB1 ATA Device (SATA) 33 °C
488GB Western Digital WDC WD5000YS-01MPB1 ATA Device (SATA) 32 °C
Optical Drives
TSSTcorp CD/DVDW TS-H552L ATA Device
TSSTcorp CDDVDW SH-S223L ATA Device
HL-DT-ST BD-RE GGW-H20L ATA Device
Audio
USB Audio Device

I have Spire Power PSU SP-ATX-400W. Recently I have installed graphic card which is shown in system specs. Hope this information can help!

Regards
Safyz

 

Hi the minimum psu for running your graphics card is 450w I would recommend using 750w something in this bracket Newegg.com - SeaSonic X750 Gold 750W ATX12V V2.3/EPS 12V V2.91 SLI Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply
for more info on selction see here http://www.techsupportforum.com/forums/f210/power-supply-information-and-selection-192217.html

 

Thanks again for en quick response! OK I will buy new PSU which you guys recommended. Thanks a lot for great help.

Regards
Safyz

 

Please try the steps outlined by the Gift73 it may help narrow down the driver issue