I can tell you, screen issues and wireless issues are one of the
problems that goes
with a laptop that is GOING TO FAIL. In your case, the F700 is the more
expensive F500 which was confirmed by HP to be a failure/defective. But you have the f500 - I actually had this problem, and what I did was I cleaned off the battery contacts with rubbing alcohol on a q-tip and it worked again, but for you, this might be a sign of hte laptop failing.
First the problem manifests as a loss of the wireless connection. Soon,
intermittent failures and random reboots and a HOT laptop will turn
into a black screen and an inoperable laptop > ie a door stop.
Go to
hplies.com and you will see almost 2,000 users with the same issue. The
problem lies with the nVIDIA GFX chip on the motherboard. THE ISSUE IS
UNREPAIRABLE. Any repairs will force the laptop to fail again.
This
issue has actually landed me in small claims court where I am suing for
hte full cost of this laptop because not only is hte laptop defective,
nVIDIA admitted it, and HP covered it up.
Join us at hplies.com
and we will give you the know how to get this issue fixed/your $ back.
We even have links to all of the information!
Send me a PM if you want more assistance.
If the computer is working on a/c power only then it sounds the the laptop battery might have shorted out and will need to be replaced. You can try pulling the battery and cleaning the contacts with rubbing alcohol and a cotton swab. Then re-install it and see if it holds a charge. If not I would start pricing new battery replacement costs. You check on the internet and see if you can find an aftermarket replacement for cheaper then what HP will charge. You should also verify that the power output from the power supply is correct and matches the rating on the supply using a multi-meter. It is possible that it is supplying enough power to run the laptop but not enough to charge the battery.
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