Hello ahmid7 …
There are three potential areas for your solution (listed in descending order of probability).
1. Power Options
Are you familiar with Windows' "Power Options" control panel module? If in fact your system is going into sleep/stand-by/hibernate mode, this will be the most probable culprit, and you won't need to proceed to steps 2,3. With it you can tweak all things related to power saving (e.g., sleep, stand-by, hibernate, timed automatic MONITOR and/or hard-drive shut off, etc.). Just make your desired (re)adjustments there.
[Control Panel > Power Options]
... OR ...
Start > Run > type "powercfg.cpl" (without quotes), then hit Enter.
Once it launches, you'll probably find most everything self-explanatory. If not:
- Search for "Power Options" in your Windows "Help and Support". Then review "…Common Tasks…" and/or "…Overview…" related items.
- Post here again and I'll be glad to walk you thru it.
2. Monitor's OSD (On Screen Display / Setup)
If step 1 is unsuccessful, it may only be the monitor (CRT/screen/display) itself that is turning off. Somewhere on the monitor there will be an OSD (On Screen Display / Setup) button/switch of some type. There you may be able to make the needed adjustment. If necessary, refer to the monitor's documentation (i.e., User's Manual, etc.) for further details.
3. System BIOS
If steps 1+2 are unsuccessful, it may be your computer system's BIOS accommodates auto/timed shutoff of your monitor, hard-drive(s), motherboard. If necessary, refer to your computer system/BIOS documentation (i.e., User's Manual, etc.) for further details on how to adjust.
If none of the above provides solution, please report this, because it may be that your system is NOT in fact going into what you perceive as a sleep type mode, but rather is experiencing an emergency shutdown. In this case there are a couple of most likely causes. However, there's no need to cross that bridge unless it actually exists.
Good luck, and thanks in advance for posting back ...
- to provide clarification or feedback.
- if you have any further questions.
- to let me know how things worked out.
"Today's the best day of my life...and NOW you're part of it!" … Craig