Question about HP RT935UAABA - HP Compaq dc7800 Convertible Minitower PC Desktop

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4 beeps oi ho dc7800 PC - HP RT935UAABA - HP Compaq dc7800 Convertible Minitower PC Desktop

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Per HP, you are using the wrong power supply, or the power supply is overloaded; should be 19.5v 135W with "smartid"

Posted on Oct 30, 2011

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4 Beeps: System timer failure
Explanation: There is a problem with one or more of the timers used by the system to control functions on the motherboard.
Diagnosis: This is usually a motherboard failure.

Time for new computer.

Posted on Jan 11, 2009

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Solution easy 1 remove fan (or metal thing for refrigerator)fron northebidge chip 2 changed the termal paste 3 remove all memory (unplug machine first) wait 3 to 5 minutes before put them back 4 star pc without memory ram until hearing fan loud 5 turn off pc 6 put the menory back and wahla working fine........ work for me i hope this work for you too!!!!! computer operating 4 year of colleuge in computer

Posted on Nov 02, 2015

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Posted on Jan 02, 2017

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Although much noise pc and did not boot

There's not much info here, but the "noise" bit sounds like either your power supply or hard drive may be bad. Do you get any beep codes at boot? Is there any video appearing at all? What does the noise sound like?


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5 beeps dc 7800 ctm fix

try these

HP Guide to beep codes:
(see your machine spevcs for which BIOS you have if you don't know)

and many more generated by searching the internet for "5 beeps hp dc 7800"

The second reference I posted is possibly the place to start

May 21, 2014 | HP Compaq dc7600 PC Desktop

1 Answer

Lost my 2 sata drives on dc7800

that normally happens if the explorer.exe has been corrupted. try creating a new account, try going to safe mode. also try a virus scan.

Dec 10, 2009 | HP DC7800 MT C2D/2.66 2GB 250GB DVD+RW WV...

1 Answer

HP dc7800, Vista business, IE8, internet browing problem

When you get it going, download Firefox and install
Wheever IE shows problems, use Firefox.

Dec 03, 2009 | HP GQ649AWABA - HP Compaq dc7800 Small...

3 Answers

Won't boot. Series of Beeps plus red light

If nothing was displayed on the monitor during the beeps then change the RAM stick(s)


Oct 29, 2009 | HP RT935UAABA - HP Compaq dc7800...

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