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18045
April 19th, 2006 19:00
Monitor Problem - vertical lines
I use Dell Dimension 8300 with Dell M770 CRT monitor under Windows XP SP2 and all has been well for long time until tonight. Logged on as normal and browsed internet, Msafee downloaded and installed updates while I was doing this - all well at this stage. I then launched a game and all of a sudden the screen had 4 verical "bands" spaced acroiss screen that had a "waterfall" tyme effect. Normal desktop visible in background.
I have checked connections - ok, restarted machine several times, restored settings from yesterday using restore point but still these banss appear. "Waterfall" effect is worse when processing occurs and screen far from normal during boot process.
Have degaussed screen but bands still there - the screen that appears to adjust monitor settings/degauss etc is pefectly clear.
Any suggestions to remedy this problem gratefully received. Could it be that my monitor needs replacing - it is circa 6 years old and has been a v good servant over the years - hopefully not...
thanks
Haffy
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raveelement
13 Posts
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April 20th, 2006 02:00
haffy
136 Posts
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April 20th, 2006 18:00
Good luck with your new monitor when it arrives.
Developments with my problem as follows:
Further developments since earlier post:
I went into display settings and changed refresh rate from 60 to 72 - screen went temporarily blank then came back as normal with no vertical lines etc - perfect. I then reset back to 60 and all still ok - surfed web/loaded game and all seemed well as I went to bed last night - apart from a very small square comprised of several horizontal lines now appearing in bottom left hand corner of each desktop shortcut - most strange.
My daughter tried PC before I arrived home tonight and vertical lines were back again! I tried the change refresh rate trick to no avail but then clicked onto internet explorer and hey presto the lines all disappeared - have currently left refresh rate at 70. Little squares still on desktop icons though!
Very strange.... any ideas what may be causing this and how I could get rid of the "squares" on desktop icons would be most welcome. Fingers crossed that the squares are my only problem going forward.
Haffy
haffy
136 Posts
0
April 20th, 2006 21:00
haffy
136 Posts
0
April 21st, 2006 18:00
Even worse tonight when I arrived home and switched on. Screen was covered in small flashing squares (not unlike space invaders) as machine booted up and then the vertical banding appeared across my desktop. A further adjacent 4 bands were now present which seem to flicker when pc is processing. Tried adjusting refresh rate and logging onto internet explorer but no luck this time in clearing problem.
I have tested monitor by unplugging connector to computer a, powering off the pc and then switching monitor on. A flahing red/gree/blue rectangle with a white border appears, as expected, and is crystal clear. Could the problem be with :
video card/driver?
possibly electrical interference from proximity of monitor cable to power cables?
a malicious virus of some sort (although my pc is protected by regulalry updated Mcafee firewall and virus scan?
Any suggestions to identify and hopefully resolve the problem would be most appreciated as its driving me mad.....
many thanks
Haffy
haffy
136 Posts
0
April 22nd, 2006 14:00