Thanks for writing to us.
When did the issue start? Was there any hardware or software changes done recently?
Is the machine overheating ?
Please update the BIOS (if not yet done) and observe for any promising changes.
Have you tried any troubleshooting steps so far?
Do provide us the system tag# and also confirm the name the system is registered under. Also let us know the contact number and email address.
Sorry for delay answering, been out of the area.
Issue started about 8 months ago off and on. Now occurs even when in use. Only way to restart is unplug, plug back in and then start. Machine not running hot, fan test is good. BIOS up to date. Ran complete on line diagnostic test and passed; no errors. I have only 19 days left on warranty
System Tag <Service tag removed> Name: Walter Keen.