Member Avatar for Danny247

I have a Compaq Presario F700 and when I try to turn it on, the power light comes on for a second (I hear the fan), but then shuts off again. The cause is most likely that I was restarting my computer for a Firefox update to take effect, but the computer jut said "Shutting Down..." for at least 20 minutes so I got annoyed and just unplugged and took the battery out. HUGE MISTAKE.

I've already tried the Escape key trick, holding Insert/Scroll, and taking the Ram out and putting it back in.

I'm not comfortable doing anything to the Motherboard...

Can someone PLEASE help?

Thx in advance :)

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  • Latest Post Latest Post by Danny247

Dani AI

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: given the symptom you described (power LED and fan for a second, then everything dies) the problem is far more likely to be hardware or the DC power path than Windows. 's suggestion to abort a shutdown only helps if Windows is actually running — it won't apply when the machine does not complete power-on. Below are practical, low-risk checks to narrow the fault before anyone cracks the case open.

  1. Power-reset and adapter check — Unplug AC and remove the battery. Press and hold the power button for 15-30 seconds to drain residual charge, reconnect AC only (no battery) and try to start. If nothing happens, try a known-good, compatible laptop adapter (or check the adapter LED and voltage with a meter). If the machine runs on battery-only but not on AC, suspect the adapter or the jack.

  2. Minimal-boot tests — Disconnect all USB devices, remove the HDD and optical drive, leave only RAM and CPU, then try power-on. If the machine gets further (or emits beeps/blink codes), that points to a drive or peripheral short. If you have two RAM sticks, test one stick at a time in each slot — a bad module or slot can stop POST quickly.

  3. Observe signs and collect details — Count any blink/beep patterns, note whether the fan spins briefly or continually, and inspect the DC jack for looseness. These observations are useful to a repair shop.

If none of the above helps, the likely culprits are a failing DC jack, a shorted power circuit on the motherboard, or a damaged MOSFET/fuse. If you are not comfortable opening the chassis or using a meter, stop and get a repair quote — replacing a DC jack is relatively cheap, a motherboard replacement is not. If retrieving files matters, remove the hard drive and connect it to another PC with a USB adapter to back up data before any repair.

Member Avatar for eugene130

uhm.. maybe thats a virus.. well anyway.. just try this
>press (window logo+R) shortcut for run
>type shutdown -a
if that is active, let me know.. ^_^

Member Avatar for Danny247

uhm.. maybe thats a virus.. well anyway.. just try this
>press (window logo+R) shortcut for run
>type shutdown -a
if that is active, let me know.. ^_^

Did you read the post? It won't come on AT ALL. Nothing on the screen, nothing.

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