Screen Blinks for a second straight after login. Please Help!?

Question

First, these are my system info;
Product name: HP ENVY TouchSmart 15 Notebook PC
Product number: F6C80PA#ABG       (0 is a zero not an oh)
Keyboard revision: KBC Version 93.51
Total memory: 8.00 GB
Processor name: Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz 
OS Name: Microsoft Windows 8.1
OS Version: 6.3.9600 Build 9600
System Type: x64-based PC
And, these are my graphics drivers installed;
Graphics device 1: NVIDIA GeForce GT 740M
Installed Drivers: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver Version: 9.18.13.4052
Driver: c:\windows\system32\drivers\nviddmkm.sys
Graphics device 2: Intel(R) HD Graphics 4600
Installed Drivers: igdumdim64.dll, igd10iumd64.dll, igd10iumd64.dll, igdumdim32, igd10iumd32, igd10iumd32
Driver Version: 10.18.10.3304
Driver: c:\windows\system32\drivers\igdkmd64.sys
Current resolution: 1920 x 1080
Refresh rate: 60
so I have this smart alternating switch thingy for my graphics which i suppose that
the screen utilizes either of these two depending on the demand for graphic resources
e.g. it switches on Intel HD graphics 4600 for displaying low-qual and NVIDIA GeForce GT 740M for displaying high-qual
to save power consumption or something that's as far as I know about my display drivers.
My laptop is reasonably new I think it's less than a year old
so i'm a bit overly pissed right now that my laptops showing symptoms of wearing.
so as the title suggests I've been noticing that when I startup and input my password,
and just as I press enter, the whole login screen blinks once very briefly and then loads up the desktop.
I know this seems only a minor issue and surely i have no major problems with running the machine
but I've been seeing forum posts of people having the same issue
and that it's a problem associated with malfunctioning graphics drivers.
So I thought maybe if the screen blinks before loading up the display,
then whatever media that I load up afterwards would not be displayed properly, since the driver is not working properly.
And since I believe that my NVIDIA display drivers are certainly capable of displaying some high graphics material
I thought maybe that I may be trashing the benefits of using a reasonable graphics card by not fixing this problem.
So I was just wondering if there's a way to resolve the blinking screen before startup problem,
which I believe is most likely to be indicating that my machine is not correctly detecting the display drivers installed
and hence is not showing any media as good as they should be showing.
I guess maybe I'll have to re-install the graphics drivers,
but I'm not sure if I would be luckly enough to run a "clean" re-install for "Both" the Intel HD Graphics and NVIDIA Geforce Graphics without confronting any technical disasters (i.e. me wrecking my machine)
So please help me with this!
and if a re-install is needed as such, please provide as many minute details as possible.

Answer 1

Hello @Aster_Wales,
Welcome to the HP Forums, I hope you enjoy your experience! 
I have read your post on how there is an issue of image flickering after you log in to your computer, and I would be happy to assist you in this matter!
To ensure that your notebook's drivers are up to date, I recommend following this document on Using Recovery Manager to Restore Software and Drivers (Windows 8). This should help with returning your system's original software and hardware drivers. To update these new drivers, I also suggest following this resource on Using HP Support Assistant (Windows 8).
If you still see your screen flicker after logging in, I recommend performing a system restore to a point before the screen started to flicker. This can be done by following this document on Using Microsoft System Restore (Windows 8).
Should the screen continue to flicker after using a restore point, I recommend performing a backup and recovery of your Operating System. This can be accomplished by following the steps in this resource on Backing Up Your Files (Windows 8), as well as Performing an HP System Recovery (Windows 8). This should help to recover your system back to factory defaults.
If the issue persists, please call our technical support at 1-800-474-6836. If you live outside the US/Canada Region please click the link below to get the support number for your region.
http://www.hp.com/cgi-bin/hpsupport/index.pl
I hope this helps!
Regards  
MechPilot
I work on behalf of HP
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