My compute will not turn on

Disconnect the power cord and battery. Hold down the power button for a minute and then connect only power cord.
If not fixed:
Please scan your computer with free version of superantispyware:
http://www.superantispyware.com/

IF not fixed: It is a screen hardware issue.

If your computer is still within Warranty then contact the manufacture, if not then bring it to a local computer shop to get it looked into.

hi calvinis, you can go to Ebay.com or amazon.com to buy your compaq persario charger, in ebay you have more security in purchasing any product , and you have shipping to any part of world , before searching in ebay , check whether ebay have seperate domain for your country , so that shiping will not take more thn one week to reach you. i have already search one product for you

http://cgi.ebay.com/COMPAQ-Presario-CQ40-CQ45-CQ50-CQ60-AC-ADAPTER-Charger-/250558120799?pt=Laptop_Adapters_Chargers&hash=item3a566d835f

copy and paste about link in browser.

Good luck

Try the laptop on an external monitor, if it works ok on that, the fault lies with the laptop screen
If it does not work on that, the fault is with the graphics chip on the laptop

If it was working ok then suddenly died, check to see if you can boot to safe mode (F8)

repost the results

Hi

Can you open the charger to check for loose wires

If you have to buy a new one then there are plenty for sale on ebay and good prices as well

http://computers.shop.ebay.co.uk/?_from=R40&_npmv=3&_trksid=p3910.m570.l1313&_nkw=Compaq+Presario+CQ50-215NR+charger&_sacat=58058


If the link dosent work then go to ebay then computers then type Compaq Presario CQ50-215NR PC Notebook adapter\charger

Most likely issue is that the cord has been damaged, or that the power jack has become loose.

First step is to remove the battery and try plugging in. If the light comes on, on the front of the laptop, your battery may be dirty or defective.
If the unit will still not power, you will need to test your cord or look into a new cord. If the cord puts out the proper 19v (give or take .5v) then the issue lies with the laptop jack. Otherwise a new cord will most likely do the trick.

-Halfs

check the power switch or button..

first then if the same. check your board

Try taking the battery out and starting it without the battery. If this doesn't work, contact Compaq (HP) immediately and take advantage of your warranty.

I'm sorry to say this sounds like a system board failure. On my HP DV200t, a very similiar issue occured, eventually only the led where you plug in the power cord would turn blue. I replaced the system board and all the issues went away.
Hope this helps, and I am sorry to be the bearer of bad news.

please remove the cmos battery then place again after 30minutes.