Hp conpaque nx9100 is not booting its HDD LED siply glows on switching on

Try to boot in safemode else check when turning on the laptop HDD led lights if so issue with HDD need to install OS.

The power supply needs to be tested. A power supply tester can be had for $20 if you are lucky.

Clear NVRAM with the help of Maintainance switch

two solutions:
1- use a cooling hardware. maybe your laptop hangs because of high Temprature.
2- VGA of your laptop almost destroyed !!(sorry damaged).
so you can only take your laptop to a guarantee center.

Hi,
If there is not LED glowing in from of the servers, check the power cable is seated in properly. If that is also fine, the problem is with the power module itself. Get it replaced.
If there is LED dispaly and no BIOS screen coming up, Switch off the server and make sure the memory modules are seated properly in DIMM slots.and also the processor and HDD.
If still it didnt come up, better contact the vendor.
Please come back and vote for me if this turns to be helpful for you or also if you need more clarifications. Thnx

Please visit http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01087277&lc=en&cc=us and follow the steps. Contact HP and see if you model is on the affected list, as it could be eligible for a free motherboard replacement to resolve the defective video card issue. If they say no, check out www.hplies.com for other useful information regarding this Globally known issue with nVidia and HP.

You're probably one of thousands of victims of defective nvidia chipsets in these systems. Call HP and complain.

If you haven't already done so, go into the bios and reset time and date else windows will throw a wobbly.

Try tapping on F11 after you turn the laptop on, and see if it will go into the recovery mode. If it does, you are in luck, and can choose how you want to do the recovery.

If it does not, you can order a set of recovery disks from HP for about $15us which includes shipping costs. Or, you can load any retail version operating system, and download/install device drivers from http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?lang=en&cc=us&prodNameId=1839164&taskId=135&prodTypeId=321957&prodSeriesId=1839143&lang=en&cc=us&submit=Go%20»

Good luck, and please rate my response.

Thank you

there are two possibilities
1. you might not properly insert your hardware
2. its broken
resiting it will help
if not replacing it will do