Sometimes our computer got turned
on, but our displays show nothing and give us a blank display, “no signal” or
“Check video cable” error. In that case there are numbers of possible issue
which creates that’s problem and preventing your computer to boot up normally.
So, stick with this tutorial and do
the step by step hardware verification what we show you below, in order to
start or boot up your computer:
If your computer doesn’t show you any sign of power(electricity) or remains dead when you push the start button, then you should check our another tutorial to know “How To Fix A Dead Computer Which Won’t Turn On ?”.
If your computer doesn’t show you any sign of power(electricity) or remains dead when you push the start button, then you should check our another tutorial to know “How To Fix A Dead Computer Which Won’t Turn On ?”.
So, now the question is what could
be the possible reason for that fault (no display problem) and how to find and
fix that problem? The answer is some minor faults, which you’ll find after
doing the step by step inspection of every hardware inside of your computer in
order to fix your computer.
Note: If your computer
creating a beep sound again and again with no display problem, then you can
directly check the solution no. 5 listed below to fix this problem
quickly.
So Let’s See
Solution
#1 – Monitor Checkup
The first thing you’ll have to make
sure is does your monitor is “Power on” or not and then check the
video cable is connected properly or not.
You can check for loose connection by
‘unplugging and plug it back’ that cable.
Solution
#2 – Graphic Hardware Checkup
If you have a graphic card installed
in your motherboard, then you should remove it and plug your monitor’s video
cable directly to the motherboard and try to start your computer again.
If your computer starts normally
that means you have a faulty graphic card installed in your computer, you can
try to repair it or replace it with the new one.
If you don’t know how to remove your
graphic card here we have a short demonstration in our other tutorial “How To Install Graphic Card Or Video Card In Your Computer
?” to show how to do that.
If you having a problem with your
graphic card, we also have an another tutorial to show you “How To Repair A Graphic Card By ReFlow Solder?”.
Solution
#3 – Internal Hardware Checkup
There is lots of extra hardware in
your computer’s cabinet which have no relation between to your motherboard’s
startup i.e. Harddrive, DVD-RW, FDD and External Card. If the problem is
generating from the internal hardware parts there is a chance your computer
won’t able to boot and shows you “no display”.
A motherboard only needs Ram,
Processor, Fan and SPMS to startup itself. So, remove all the unnecessary
hardware like HDD, FDD, DVD-RW and External card etc. to check does this
problem is coming from those extra Internal Hardwares or not.
After that, try to turn on your computer.
If your computer boots up normally, that means you have an issue with your
internal hardware parts and you can check every hardware parts one by one to
find which one creates that problem. If your display doesn’t show you anything
yet, then move on to next solution.
Solution
#4 – CMOS Battery Checkup
Sometimes our motherboard’s CMOS
battery got drained out and start’s creating this problem’s and maybe prevent
your computer to starts up. In that case, you can remove your CMOS battery and
try to start your computer again.
If your computer starts, then change
your motherboard’s CMOS battery and try to start your computer again. If that
also doesn’t help’s you, move on to the next solution.
Solution
#5 – Ram Checkup
Commonly Ram must be the 90% of the
reason for this “no display” problem. If your ram got dead, your motherboard
will never be able to start itself until you’ve replaced it with a new one.
If you have two rams installed in
your computer, then remove one of them and try to turn on your computer. If
your computer still won’t turn on then remove that ram from that slot and
install it into another slot. If your computer still won’t able to Turn ON,
then do those previous steps with your other ram stick (vice versa).
If you still facing that problem
that means there is a chance your ram got dead, in that case, borrow a
compatible “Ram stick” to your friend and install it into your computer to
checks does your ram creates that problem or not.
If you find your ram dead, you can
try to clean it “How to Clean a Ram Stick ?” And
then check that ram does it works after cleaning. If the cleaning doesn’t work
then you should try to repair your ram by following our this tutorial “How to Repair a Dead Ram Stick (Memory Stick)?”.
Solution
6 – Processor/Motherboard Checkup
You can try to check your
motherboard by installing another process into it to know, does your processor
is the one who’s creating this problem or not. Otherwise, you are having a
motherboard problem because there are only 1% of chances that your processor
got damaged.
If the above 5 checkups didn’t work
for you that means you have 99% of chances you’ve had a faulty motherboard on
your side. Take you motherboard to the repair shop or you can replace it with
the new one.