The most frustrating situation that one can encounter is that of computer malfunctioning. A specific situation like computer monitor going blank leaves the user bewildered. You can see things like, a black screen after booting, a series of colored lines, inability to find the cursor or a blank monitor screen after logging in. These could occur due to numerous reasons.
Through this article we will find out the reasons for blank screen.
You may also see that the montor has become blank, black when when it was turned on, or a black screen while entering Windows. Though these two situations seem similar but these could have varying causes. It could be a hardware issue, corrupted software or system files, an incompatible or damaged device driver.
In this article you will get to know about some common occurrences, and possible causes of blank screen. These will include both, blank screens in Windows and error in computer boot up. Please note that here each given issue may be resolved in either scenario.
Let us have a look at a few common occurrences involving blank screens:
Common Blank Screen Occurrences
- Computer boots up but the power light immediately goes from green to red and the screen becomes blank
- Upon booting you hear the CPU fan start, the optical drive clicks and your power light is on. But still the computer does not start up.
- The power light is on and the computer appears to be running but still the screen is blank.
- The computer reaches to the Welcome screen, but before entering the Windows session, the screen is blank except the mouse cursor.
Possible Blank Screen Causes
If you are able to see your screen initially upon booting, boot into safe mode by pressing the F8 key(only applicable in Windows) as the system starts. If you are able to log into safemode in Windows without the blank screen then there might be other reasons. The cause for blank screen might be connectivity problems with peripherals, auto-starting applications, or device drivers. The reason may range from corrupted files by malicious virus to spyware.
PC Monitor Status
The most common cause for blank screen may be a monitor might not be properly attached. This might be due to some fault in the power cable. Another reason might be corrupted device drivers for the monitor or the device drivers for your monitor have been replaced during a Windows Update session.
Ensure that the monitor is plugged into a proper port and a proper combination of connection types are done. Pay attention whether the PC has an HDMI port, or a VGA-based monitor or a PC that cannot use a DVI-based connection.
Failing Video Card or Adapter in Desktop PCs and Laptops
A video card failure can be yet another cause of blank screen. Laptops, for example, get heated quickly and if it is hot for too long then the connection of the vcard breaks from the system. This results in a blank screen. This requires a cooling off time and a specific step by step power own process. For this purpose seeking computer support is advisable.
Removable Flash Drive
If there is a removable USB flash drive plugged in or USB hub then remove the drive. Now try rebooting. If the system boots up , then the issue might be with the faulty flash drive or corrupted flash drive. Another issue might be with hardware concerning the USB port, even a driver corruption.
Recently Installed Hardware
A recent hardware installation like a video card, other expansion card? Have you connected a peripheral to port on motherboard, such as a keyboard, either USB-connected cable or wireless USB dongle? Upgraded any motherboard component, such as RAM, or at minimum, added another RAM module? Unless the hardware is compatible with the system the user faces blank screen issue. This so happens because of compatibility error that occurs at the time of startup, and the screen is frozen blanc.
Checking for RAM Modules
Upgrading RAM or error in RAM also has its own consequences. Some of them are:
- Recently upgraded RAM: If the RAM is upgraded and the motherboard is not able to recognize the RAM the monitor goes black. The user needs to ensure that a correct RAM type is added which does not exceed the amount of memory possible. Also checking for the proper configuration is essential and ensuring whether they are installed in proper configuration.
- Existing RAM may be failing: Try removing the modules, cleaning and reinserting them. Try swapping out the modules with the previous memory chips to see if the issue persists. If it does then you need to consult a computer support expert to help resolve the issue.
New or Upgraded CPU
If you are assembling a new system or upgrading an existing one, you need to to check if the CPU is properly seated in its socket. If the CPU is removed/ replaced completely then make sure to reapply thermal grease before re-seating it.
Possible Power Issues
Whether the power light is a solid, or even flashing, amber color this could mean a numerous things. The common cause underlying might be an issue with the power. Either the power supply is fluctuating or there is a battery or an adapter problem for laptops. There might be a short circuit in the hardware, USB or any other port.
Corruption in Master Boot Sector
This area of computer is essential for startup procedures. If the files or code become corrupted, or is infected by a virus then this results in blank screen.
After knowing the possible reasons for blank screen error it is advisable to seek computer support for complete resolution and keep problems at bay.