Hud and screen flickers

Please attempt to attach a screenshot.

Hard to take a photo of the glitch, but I found the Redstone Tab flicker.

but I found the Redstone Tab flicker.

the what ?

Is this issue now resolved ?
If not, Please force a crash by pressing F3 + C for 10 seconds while in-game and attach the crash report ([minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/finding-minecraft-data-folder]) here.

---- Minecraft Crash Report ----
// Ooh. Shiny.

Time: 6/23/14 6:53 PM
Description: Manually triggered debug crash

java.lang.Throwable
	at blj.q(SourceFile:1539)
	at blj.ap(SourceFile:861)
	at blj.a(SourceFile:303)
	at net.minecraft.client.main.Main.main(SourceFile:121)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
	at bya.a(SourceFile:310)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [cby['Tonkoon'/30, l='MpServer', x=-150.72, y=256.98, z=145.19]]
	Chunk stats: MultiplayerChunkCache: 440, 440
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: 0.00,4.00,0.00 - World: (0,4,0), Chunk: (at 0,0,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 175681 game time, 13060 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
	Forced entities: 12 total; [cby['Tonkoon'/30, l='MpServer', x=-150.72, y=256.98, z=145.19], vc['Painting'/14, l='MpServer', x=-21.50, y=240.50, z=5.03], vc['Painting'/19, l='MpServer', x=-9.00, y=241.00, z=5.03], vc['Painting'/13, l='MpServer', x=-22.97, y=241.00, z=12.50], vc['Painting'/18, l='MpServer', x=-8.03, y=240.50, z=13.00], vc['Painting'/13, l='MpServer', x=-22.97, y=241.00, z=12.50], vc['Painting'/14, l='MpServer', x=-21.50, y=240.50, z=5.03], vc['Painting'/16, l='MpServer', x=-8.03, y=239.50, z=13.00], vc['Painting'/19, l='MpServer', x=-9.00, y=241.00, z=5.03], vc['Painting'/18, l='MpServer', x=-8.03, y=240.50, z=13.00], zz['container.minecart'/31, l='MpServer', x=-200.50, y=10.06, z=140.50], vc['Painting'/16, l='MpServer', x=-8.03, y=239.50, z=13.00]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bya.a(SourceFile:310)
	at blj.b(SourceFile:2134)
	at blj.a(SourceFile:312)
	at net.minecraft.client.main.Main.main(SourceFile:121)

-- System Details --
Details:
	Minecraft Version: 14w25b
	Operating System: Windows 8 (amd64) version 6.2
	Java Version: 1.7.0_40, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 4273725112 bytes (4075 MB) / 6174015488 bytes (5888 MB) up to 6174015488 bytes (5888 MB)
	JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx6144M -Xms6144M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 14w25b
	LWJGL: 2.9.1
	OpenGL: Intel(R) HD Graphics 4600 GL version 4.2.0 - Build 10.18.10.3621, Intel
	GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.

	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: English (US)
	Profiler Position: N/A (disabled)

Except that your Java is slightly outdated:

Java Version: 1.7.0_40, Oracle Corporation

there is nothing to see in the crash report.

Please update your Java to the latest version (1.7.0_55 / 1.8.0_05): http://www.java.com/en/download/.

• When using a 32-bit browser on a 64-bit operating system the automatic version detection will only show the 32-bit version of Java, the 64-bit version needs to be downloaded manually: http://www.java.com/en/download/manual.jsp.

Please use the Mojang Support Center., especially the help chat. People there have often solutions such as updated drivers to fix such issues.

See MC-58760 for flickering issues with Intel 4600