Why is my hd 7htc doesnt turn on?

You may have 2 problems. One may be the turn signal bulb is blown which causes the fast blinking. Or, your turn signal wires may have caused a fuse to blow which has resulted in the signal flashing and no horn if they are on the same circuit. Check all your fuses.

Please cheak your VGA cable. & RAM.

My optavision hd 9500 projector's light doesnt come on, have changed bulb still won't work. what do i do

Unplug the set and any box etc in line for a while and plug things back allowing first all the equipment to try to reboot.

make sure that you check your BIOS setup settings, you need to turn on both the primary sata and the secondary sata.

You may need to change your HD settings on the back of the console ( HD setting is actually on cord ) I had that issue when I first went online w/360 . If that does not help u know X box costumer support will repair any damaged system prob. no cost and does'nt take as long as they say.

If it is an older Laptop... it could just be the HD not spinning up correctly or not spinning up as fast as the PC is booting. There is a HD check to the BIOS in the first seconds of the Boot. BIOS doesnt see it... you get the fail.
A good test is after it fails... do a CTRL/ALT/DEL to restart the system... if it Boots then it was the HD not keeping up.

OPTION: Also check to see if the BIOS needs updated and this is a tricky opperation to do... make a mistake you loose your system. This could also help if the condition is common and a patch was created.

It doesnt hurt the to run it the way it is. The Drive lagging like that doesnt always mean the HD is bad. If it occours every single time I would worry. Buy a New HD to be safe and also the newer HD's will help 100% on the Speed of the system.

Replace lamp.

hold the power button until it blink twice then turn off.

unplug the tv, then reinstall the bulb,if that doesnt work youll need a tech to help. (dont buy another jvc tv)