Blank screen after monitor sleep just blue flashing light

I disagree with ikkenom only due to the symptom of the flashing blue light. This would indicate to me that the monitor is not getting any display signal and is in sleep mode at least the is what happens on my Samsung monitor. Used to be that they use a two color led in the monitor, green when ON and getting display signal and amber or orange when in sleep mode. I would check the computer by trying a different monitor. If you have a second monitor, great, if not, maybe a friend will let you bring your computer over and try the computer with their monitor. Could also be a display adapter setting. Do you get any change when you first turn on your computer? i.e. Do you get the BIOS or manufacturer screen when first turned on? Also if you disconnect the monitor cable from the computer and power cycle the monitor, do you get a No Signal display for a few seconds before the monitor goes black and the blue light starts flashing?

Let me know what happens with the testing above or if you need further instructions to carry out testing.

Thanks, Jim

hi n hello

tried restarting the computer ?

if the power light indicator is just blinking with no display, you must checked the power supply the common cause bulging electrolytic capacitor. just replace with the same value and rating then the problem solved.

No monitor model told
no PC model told
no OS told
also PCs with wrong drivers, the sleep mode fails.
so turn off sleep fully in the control panel + power settings
go to performance mode.;the blow flashing light means I AM sleeping but THERE ARE ONLY 3 WAYS TO END SLEEP ON A DESKTOP(NO NOT FIDDLING A MONITOR)
wiggle the mouse or click it but of USB ports are allowed sleep that fails. hard. so never allow usb to sleep.
then way 2, hammer the space bar ,keyhboard or the ESC key
see PC exit sleep, if USB is allowed to sleep (ports)it too fails
and last the power button pushed in for 10second and released
forces a sick PC, (bad drivers that kill sleep features) this act resets the PC and reboots.
why not just turn off all sleep modes. and just allow the monitor to sleep and or power it off. not used.

also page in your manual states (see resume)
and never allow Hibernate at all it is super buggy or any deeper state.

"Press this button to turn the power on
or off. You can also configure the power
button to operate in Standby/Resume
mode or Hibernate mode. The power
indicator lights when the computer is
turned on."

why not test the PC with newer monitor 2011 newer LED back lighted monitor to be sure your older monitor is not bad as seen here in this flash light test.





rCAP
learn to disable all forms of sleep modes, ALL no exceptions.
then see if this works if it does you just learned your drivers are bad.
or test the PC with a newer monitor 2012 is LED for sure)
learn that bad drivers most times make sleep fail
no oS told at all, not even a tiny clue is this XP the versus magnet from H3LL>? or worse upgraded to vista and drivers are all no good for vista. never up grade any os lacking oem support for all drivers.
newer. vast PCs have no upgrade path at and guess what
emachine is infamous for that fact. they stink this way but sure wins the dirt chip cost war, sure.
the fast resume is on the power button to set right]
the fast press is resume from sleep, the but is programable.
if drivers are wrong all this fails hard,

this old monitor has 2 issues.
1: it has CCFL tubes that love to burn out (backlamps)
most this old are long go, yell,dim.,blinking or DEAD.
2: push the menu button on front of mon. turn off power saver.

3: if the PC goes to sleep, or hibernete mode (parked)
then that is 100% normal
if you dont like feature then go to windows control panel
click power, ICON and turn off all monitor sleep /hibernate modes.

that assumes windows, no OS stated.


if the lamps are dead,
use flash light pointed to sceen, see data. ? bingo for bad CCFT tubes.
as seen here

http://www.pcdied.com/monitors.html#flashlighttest

Be sure computer is actually starting. Power off then on computer you should see the boot sequence and then windows screen on monitor. If you do not see startup sequence monitor is not sleeping either the monitor has failed or the video card has failed. Try another monitor first.

Hi
You have a leaking capacitor. The monitor is fixable. Check my website @ www.micromendllc.com

You can google search for an app called NOSLEEP.EXE
It was written by a Symantec employee to keep your screen active regardless of pic settings.
Install and run it. That will verify the issue is with of or monitor
Software is free

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/lisa_52daba487e5b4d53

turn off the hybernation mode from the power management option in control panel

Regards
Samson Ved

I think it maybe time to buy a new monitor