Windows 7 black screen and cursor - Graphics card related

[0kingskins0]

Hi all, heres a quick run down of my problem. about a month ago my pc started having errors at bootup. it would get as far as the desktop, then freeze the desktop, allowing me to still use my mouse but i couldnt select anything and the system would hang. After restarting on average about 5 times it would then work and my pc would run perfectly.

about 2 weeks ago i had a blue screen crash that mentioned something about the display drivers. (i was using a radeon 4870) i figured this, with the startup problem must be my graphics card on its way out. one day i started my pc and was greeted by my 1st 'black screen' with cursor and decided enough was enough and took out my graphics card, leaving only the on board graphics (radeon 4250). my pc worked fine for a few days and i decided to try and work out if the problem was software of hardware related so i reinstalled my 4870 card. this immediatly booted me to the black screen with cursor so strait away i took it out again.

so now im back to my on board graphics, however this time the problem has not gone. i am writing this via safe mode as i am still getting the black screen with cursor appear at start up.

ive tried start up repair which says there is no problem, ive tried disabling and uninstalling/re installing the onboard graphics but still the black screen.

anyone have any ideas short of re installing windows? thanks in advance

 

[Arc]

Welcome aboard.

First, you are to clean the dust inside the computer, reseat the ram modules, clean the edges with cotton clothes, Reseat the sata and power cables, update the display driver.

Those actions may change the situation there.