Could use some ideas to help me eliminate what I think is a temperature related hardware problem.
hardware- Dell Inspiron 7500
Laptop returned to me for repair with dead motherboard and broken hinges. Sent in for repair.
Before shipping for repair- removed all Ram,H.D., DVD/floppy module, and battery.
Unit returned with new hardware in place. Replaced Ram, H.D. etc- booted up, received usuall "save to ram file missing" then IRQ conflicts "IRQ not configured- PCI Serial Bus Controller on motherboard Bus:00, Device:07,Function:00
followed by device:8 and Device:10
Changing IRQ assignments resolved above but it still hangs on boot up when used with win98 and also after a fresh install of Win2000.
After many weekends of trial and error, changing out hardware, and a several O.S. installs later...
It appears that after a 25 minute warm up period it will warm boot/ cold boot all day long after intial operating temperature of computer has got warm to the touch.
I have tried the following-
switched ram, H.D. from a identical unit and reinstalled win98, then win2000(formatted drive). reacts the same after numerous Bios changes including reset defaults, diasabling many ports, controllers, APCI, etc with either O.S.
unit works fine if you leave it running 24 hours a day- give it a few hours to cool off and it will need 25 minutes to warm up- then it boots fine.
any ideas on how to check motherboard or connections inside? I have never disassembled a laptop- should I?
I don't see much point in sending back to Dell- 25 minutes of testing and it will "test ok"- ship back, start all over. Took 1 hour to convince them that my "no post" laptop needed a motherboard in the first place, etc, etc.
I wanna be sedated....