Question about HP PAVILION A847C Intel Pentium 540 HT 3.20GHz, 512MB DDRAM, 250GB Hard Drive, LightScribe DL DVD RW... (PP169AA) PC Desktop

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Won't power up

Green light on psu blinks, no led on mother board. Swapped with "questionable" psu that when plugged to mb has steady green on psu and board and it blinks as well

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Hi

seems like your ram is bad and also change your vga [graphics card]

kind Regards
RAHUL_hunk

Posted on Mar 10, 2009

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You may also try removing and reseating the RAM and Video card, blowing out the connectors with compressed air before reseating.. Also look closely at the components on MB for any signs of swelling, leaking, burning etc. I suspect the MB.

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here is a pdf downloadable flile that will help you.
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The clicking noise from the PSU is kinda perplexing though...

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Hi Paul,
see page 8 number 15 for location. Than see page 19, System Panel Header in your manual.
The basic wire color's for positive are red, blue, green & can also be light blue, light green, light red.
Negative wires are usually white or black. Case wire colors do vary from case to case.
To see pin one shown on page 19, (positive + for hard drive led = HDLED+). Bottom row farthest pin to the left of set. Pin two is above pin one. Pin two is, PLED+ (known as power led). Pin 3 is to the right of pin one & is HDLED- (Hard drive led, negative). Pin 4 is above pin 3 & is also PLED-, (Negative for power led). ECT!
6781222.jpg If your new case has an internal speaker (Used for P.O.S.T, power on self test). This would connect to, Chassis Speaker Header located on page 8, number 16. Again, normally only two wires are used across the 4-pin connector. (One at each end of the connector).

To see ASRock's main site for the 775VM800 motherboard click this link:
http://www.asrock.com/mb/overview.asp?Model=775VM800&s=

Good luck Paul!
Run into a snag, just post the issue here.

Mike

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Psu blinking green light, no power


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Just before throwing my computer away I decided to follow the instructions listed by "guest" to unplug the power to the motherboard and then with the power supply back on to plug the cables back into the motherboard. No only did sparks not fly, but it started up and ran perfectly! Many thanks to "guest."

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