troubleshooting Question

lost 1600x1200 resolution

Avatar of NigelRi
NigelRi asked on
Displays / MonitorsComponentsWindows 7
22 Comments3 Solutions1630 ViewsLast Modified:
My PC's lost its ability to display 1600x1200.
1-2 weeks ago, happily working fine, then a BSOD and the max monitor resolution dropped.
I've had this PC with nvidia 8600GT and Viewsonic VP2030 for 2.5 years, first in Vistax32 and for last 6 weeks on Winx64. Always worked with monitor running at iots native 1600x1200.
Can't work out what has failed or got corrupt:  Win7, 8600GT, its drivers, or Viewsonic.
I've kept the o/s up to data, I've run a Win7 Repair, I've deleted all traces of Nvidia drivers (used guru3D DriverSweeper to eradicate) and re-installed latest Nvidia Win7x64 bit drivers from them, and I've got support from Viewsonic who sent me their newest Win7x64 driver package and installed it.  But still max Control Panel will offer is 1280x720.  When installing the Viewsonic driver all ok except it ends saying "Your monitor has not been recognised".  Control Panel conitned to show only a Generic Non-PNP Monitor installed.  BTW the cable is standard DVI-D cable always used.  The Nvidia installation runs fine ... but does not give the result required thoufgh Control Panel reports proper Win7x64 drivers are installed.
Any ideas?
Has the monitor failed? (At system startup it still shows the onScreen prompt "Resolution 1600x1200 would be best but is not set")
Has the 8600GT failed?
Has my Win7 install got corrupted?  (I notice that at same time this loss of resolution and sincer the original BSOD, when Win7 gets to "Starting Windows" I no longer get the Win7 animation of colured dots flying to me nor the formation of the coloured and pulsating flower. I just get the old Win98/Vista-style Progress Bar as windows starts, until the Login schemes appears correctly in true Win7 format. )
Should I try a clean Win7 install (hate the thought as I'll lose all my applics)?
I have paid-for insure/replace cover on the hardware - should I just give up and get the grapphics card and/or monitor replaced with new?
Help - please.  
Thank you, desperately.
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