What Video Card?
Are you using DVI or an Analog connection? Does it go blue screen after the windows logo or before?
Does your Monitor go into no signal mode (amber or red light).
Try booting into your Bios and checking a few settings. These settings are not on all PC's and not knowing what computer you have im gonna just list common fixes.
In the Bios Make sure plug and play is enabled (should be by default but you never know) and that if the computer has onboard video that its set to PCI/PEG (not vise versa)
Try installing an older version of the video drivers.
If this problem persists after all these there is a great chance that your GPU is on the way south or is already there. The stock VGA Drivers do not address the GPU's onboard memory (someone correct me if im wrong) so that is possibly the reason why it works with the stock VGA drivers but not drivers made for the card.
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Your tears fuel me