Remember - This is a public forum so never post private information such as email or phone numbers!My computer reboots for no reason at NO specific interval or when using no particular program.I need to be able to fix this but do not know how. Thanks 1 person needs an answerI do too

This sounds like a hardware problem, but in order to get a little more information, disable automatic restart on system error, wait for the next crash, and then post the error message and stop code, exactly as they appear.Have you recently installed any new hardware? If so, what? If you disconnect it, do the reboots stop?To disable automatic restart:Restart the computer. As the computer is restarting, press the F8 key repeatedly until you see the Windows Advanced Options screen.Use the arrow keys to select Disable automatic restart on system failure , and then press ENTER.

Thanks so much I am going to do the settings you suggested now and will be back on board the next time it reboots.I have done the diagnostic testing that took about 3 1/2 hours and showed no problems. That was what Dell had me do when I reported problem to them.bj

Good. And when you do post back, elaborate a bit on what diagnostic testing you did that showed no problems.

Sorry to be such a nuisance but I tried the F8 key several times last night with no success so signed on again to be sure I had written the correct instructions and tried again. Nothing happens when I keep pressing the F8 key. Is there another way to get to advanced options. I do have a choice of F2 or F12 during the boot.Thanks againbj

You probably stopped pressing F8 too soon. To get to the Advanced Options Menu, F8 needs to be pressed just after you get the screen that tells you about pressing F2 or F12 (but before the Windows boot sequence starts).In any case, once you're in Windows, right-click on My Computer, select the Advanced tab, and click the "Settings" button under the bottom heading, "Startup and Recovery." On that screen, UNcheck the box to "Automatically restart" under "System Failure" and OK your way out.Seeing that screen refreshed my memory that a system crash should have written information to the System event log. You should be able to find at least the last crash information there without needing to turn off automatic restarting.Start > Run > type "eventvwr" (without quotes) and click OKClick "System" in the left pane.Scroll from the top down in the right pane. You're looking for an "Information" entry whose "Source" is "Save Dump." The two entries immediately preceding the Save Dump entry should be from "eventlog," and there probably will be an "Error" entry immediately before the first "eventlog" entry.Double click on the first (usually bottom) entry of the sequence I just described and an "Event Properties" page will open. You will see up/down arrows (which you can use to look at other entries in the log). Just under the up/down arrows is a "copy" icon. Click on the copy icon and paste into your next post. Do this for the "Error" entry (if there is one) and for the "Save Dump" entry.The Save Dump entry will show the"stop code" with a message something like this: "The computer has rebooted from a bugcheck. The bugcheck was: 0x100000ea (0x8740eda8, 0x88418530, 0xf78b2cb4, 0x00000001). A dump was saved in: C:\WINNT\Minidump\Mini062610-01.dmp."In this example, the stop code 0x100000ea means "THREAD_STUCK_IN_DEVICE_DRIVER_M" (which is the error message you would have seen if the system hadn't automatically restarted).Sure enough, the Error message just below the two eventlog entries in this example showed an error in the video driver:The driver nv4_disp for the display device \Device\Video0 got stuck in an infinite loop. This usually indicates a problem with the device itself or with the device driver programming the hardware incorrectly. Please check with your hardware device vendor for any driver updates.