Remove suspension mode from a Dell GX260

I manage a couple of hundred GX260 desktops by Dell. I normally don't have any problems with setting the power options on the pc to never suspend or hibernate. However, I have 3 that no matter what I set the power options on go into sleep or hibernate.Once they are suspended it takes 3 or 4 reboots to wake them.  I tried setting the BIOS setting to S3 and checked all my desktop settings but I am stumped on just these 3 units. Unfortunately the warranty has expired and I cannot contact Dell for a resolution. Does anyone out there see what I so clearly do not?
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hej613Asked:
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jamietonerCommented:
If you have to try and reboot it 3 or 4 times to get it to boot back up you may be looking at a more serious issue that a hibernation/standby issue. Could be looking at a bad psu or motherboard. Check the motherboard for bulging or leaking capacitors (www.badcaps.com). If the caps look fine use the jumper to reset the cmos to defaults and see if that helps.
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ComplyCommented:
Sometimes the BIOS has this setup and it over rides windows settings. Check to make sure they are turned off.
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David WallCommented:
Have you tried updating the bios you may have a rogue version.
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michkoCommented:
Have you checked the logs for errors?  You may get a better idea of what's happening there.  Post any errors back here and we'll go from there.

It may be hardware related, Ultimate Boot CD (www.ultimatebootcd.com) has some very good hd, mb, ram, cpu tests.  
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hej613Author Commented:
Thanks I will be back in that region this week and will check this advice out. I appreciate you all
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hej613Author Commented:
Thanks for the input. I have been off from work but will chek back soon.
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