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When I got my new HP dv7t Quad Edition 17" laptop, I immediately got Java and Minecraft (and Chrome). I opened Minecraft and awaited the famous login screen. I was then surprised with the following error.

enter image description here

In my opinion, I feel the Java 7 VM is to blame. If it is, how do I play Minecraft while Mojang or Oracle work on a new version?

EDIT: I have an NVIDIA GeForce GT 630M.

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Does downgrading to Java 6 fix the problem? Minecraft and Java 7 don't get along yet. – SevenSidedDie Sep 8 '12 at 21:37
7 Update 7 works fine for me. I don't think I have any other versions installed ATM, since nothing else is showing up in Add/Remove Programs for me. – MBraedley Sep 8 '12 at 21:40
How do I downgrade to Java 6? – parion Sep 8 '12 at 21:42
@MBraedley I should have said "don't get along well yet", yeah. If you search for [minecraft] java here, you'll find all kinds of weird behaviours reported that are fixed by dumping Java 7. – SevenSidedDie Sep 8 '12 at 21:42
@parioscreations Uninstall Java 7, install Java 6. If it fixes the problem, afterward there are ways you can have both installed but force Minecraft to use Java 6. – SevenSidedDie Sep 8 '12 at 21:43
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2 Answers

up vote 2 down vote accepted

Note - Assuming you PC is a 64-bit machine -

Are you running 64-bit Java? I've been having a lot of issues running MineCraft on 32-bit java - The game will play fine for about 5 minutes and then lag out (checking the memory usage it gets to about 1GB)

I'd say uninstall Java, and then go to http://www.java.com/en/download/manual.jsp and select the 64-bit version manually.

If you want to check if your PC is 64-bit, hit Start & Right-Click Computer, and select Properties. Under System it should show whether it is 64-bit.

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up vote 0 down vote

Open Minecraft using MC patcher. You won't be able to play as your user account, but you will be able to play, and install mods easier.

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