Question about HP Compaq Presario SR1303WM (PP150AAR) PC Desktop

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Hi..my compaq presario CQ40 keep on rebooting and some times hang when switch on the pwr button....please help thanks..

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First, check the processor fan to make sure it is running, and make sure the heat sink is not clogged with dust. An overheating processor can do some weird things.

Second, look at the electrolytic capacitors next to the processor (these are small aluminum cans with a plastic wrap around the sides, mounted vertically on the circuit board). If the tops are bulging or have split and leaked material, they have gone bad and need to be replaced.

Third, check the power supply voltages (an oscilloscope is best for this, but few people besides electronic technicians have them) to make sure they are at their nominal values and do not have excess ripple.

Voltages are as follows:
Black wires - ground, measure voltage from here or the metal case to other wires.
Orange: 3.3 V +/- 0.1
Red: 5.0 V +/- 0.25
Purple: 5.0 V +/- 0.25, even when the computer is off (standby power, runs the turn-on circuits).
Yellow: 12 V +/- 1.0
White: -12 V +/- 1.0 (this is generally used only for audio circuits and may not be present)

Start by checking the red and yellow wires on a drive connector; not only is this easiest, but power supply problems generally show up here. The 5 volt supply in particular should be stable; the 12 volt supply may vary within its permissible range. Also check with the AC range on your voltmeter - the AC component should be less than 0.1 volts.

Posted on Apr 08, 2011

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Hi..my presario CQ40 keeps on rebooting and sometime hang when turn on the power button..please help..thanks


If you are encountering this kind of problem, you may try to check for conflicting softwares.

Look if how many Antivirus program installed on your pc. 2 or more antivirus would really slows down the pc.
Check on control panel
check on program files and program data

Do a disk clean up and delete temp files on your computer.

Disk clean up
start->all programs->accessories->system tool->disk clean up

deleting temp files and shell cookies
start->run->type shell:cookies->press enter->=ctrl+A->shift+delete
start->run->type %temp%->press enter-> ctrl+A->shift+delete

You may also do a system restore
start->all programs->accessories->system tool->system restore

You may also check for any malicious software, run full scan using your Anti Virus program

I hope it works for you.

Apr 08, 2011 | Compaq Computers & Internet

4 Answers

Good day.. my compaq presario cq40..is powering on but blank on the screen and caps lock and num lock blingking only..thanks


Hello good day,sir
My compaq presario cq40..is powering on but blank on the screen and caps lock and num lock blingking only.I try ready so many time but everything are not meaning for me that's why i need your help,sir.please,give me some advice for power back.
Thank sir.

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Compaq presario cq40 driver


find your compaq presario cq40 driver from these site
1) www.drivershq.com/Drivers/Compaq/Compaq-Presario-CQ40.../Models.aspx
2) other wise goto compaq site

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1 Answer

Drivers for CQ40 108tu laptop


Hi,

The link would be :-

http://www.zyxware.com/articles/2008/10/07/compaq-presario-cq40-108tu-laptop-drivers-for-windows-xp

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

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I have compaq presario computer.model no is cq40--301tu


hi dinesh... maybe it can help you.... copy this link to you browser...http://download.cnet.com/1770-20_4-0.html?query=compaq+presario+cq40-301tu+driver&tag=srch&searchtype=downloads&filterName=platform%3DWindows&filter=platform%3DWindows... and look for you driver you need to install... thank you very much..

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Check out the wireless setup manual for your laptop here:

http://h10032.www1.hp.com/ctg/Manual/c00065819.pdf

Hope this helps!

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Win xp drivers for cq40-144tu


you can find the driver detective and it updates drivers, download here or get other available drivers on the same page http://www.drivershq.com/Drivers/Compaq/Compaq-Presario-CQ40-Notebook/Compaq-Presario-CQ40-144TU/9747/40375/40475/Drivers.aspx

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Windowsn xp


Windows XP installation problem in Compaq Presario CQ40-108TU

Hi, go to this link and read carefully about this article:

http://www.zyxware.com/articles/2008/10/17/windows-xp-installation-problem-in-compaq-presario-cq40-108tu

*Your vote is highly be appreciated. I hope this will help you. Drop me a comment if you still have problems. I will help you.

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